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PROTHELP.TXT
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1993-12-26
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Help on Executive Host Protocols:
(Z)modem - This advanced protocol is very fast and reliable. Nice
features such as auto-receive and crash recovery (allows the user to
resume an interrupted transfer), make this protocol the best choice
for most callers.
(P)uma - An advanced external protocol similar to Zmodem. It is
also very fast and reliable, and has crash recovery to resume aborted
transfers. The 16550 UART is fully supported by Puma.
(H)/S Link - This is a protocol that allows the simultaneous
sending and receiving of files. Chat is also possible during
transfers. This is a very fast reliable protocol which provides
crash recovery.
(B)imodem - This protocol is on of the new bread of protocols that
allows the simultaneous sending and receiving of files. In addition
a chat screen with wordwrap is active during file transfers. When
simultaneous transfers are taking place, effective transfer rates can
be nearly doubled using Bimodem compared to other uni-directional
protocols.
(O)-MobyTurbo - This protocol is actually a modified Zmodem mode that
is available via DSZ.COM. Transfer rates are reportedly higher than
Zmodem in most cases, without any sacrifice in Zmodem reliability.
(J)modem - This external protocol is another relaxed Xmodem hybrid.
Less frequent CRC checks and a data transfer windown that "streams"
up to 8k in size yield a substantial gain over standard Xmodem rates.
(Y)modem - This protocol is a variation of Xmodem which keeps the
correct name, size, and date of the files being sent. It may use 128
or 1024 byte blocks.
(X)modem - Sends files in blocks of 128 characters at a time. When
the receiving computer is satisfied that one block has arrived
intact, it signals so and waits for the next block. Error checking is
a Checksum or a more sophisticated Cyclic Redundancy Check.
(1)k-Xmodem - This is a small variation of Xmodem that uses blocks
that are a full 1k block in size.
(G)-1k-Xmodem - This is a variation of 1k-Xmodem that is designed
for error correcting modems and null modem cable links between two
computers. It sends blocks one after another without waiting for
acknowledgment from the receiver.
Ymod(E)m-g - This protocol is a variation of Ymodem, which requires
an error correcting modems or null modem cable links between two
computers. It sends one block after another without waiting for
acknowledgment from the receiver.
(S)ealink - This is an advanced version of Xmodem that is 15 to 25
percent faster than regular Xmodem. Sealink passes a file's name,
size, and date when transferring.
(M)odem7 - This is another Xmodem hybrid that passes the filename
before starting the transfer, eliminating the need for it to be
entered by the user.
(?)Help - Displays this protocol help information.